October weather forecast
Hilton Head Island, SC

Tall iconic lighthouse seen in a great night view over downtown Hilton Head Island, South Carolina
Tall iconic lighthouse seen in a great night view over downtown Hilton Head Island, South Carolina

Weather in October

October, like September, in Hilton Head Island, South Carolina, is another warm autumn month, with temperature in the range of an average low of 65.3°F (18.5°C) and an average high of 75.9°F (24.4°C).

Temperature

In October, the average high-temperature marginally drops from 83.3°F (28.5°C) in September to a still moderately hot 75.9°F (24.4°C). The average low-temperature, is 65.3°F (18.5°C).

Humidity

In Hilton Head Island, the average relative humidity in October is 73%.

Rainfall

In Hilton Head Island, in October, during 10.9 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 175.3 rainfall days, and 32.28" (820mm) of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Ocean temperature

In Hilton Head Island, South Carolina, in October, the average water temperature is 77°F (25°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In October, the average length of the day in Hilton Head Island is 11h and 22min.
On the first day of the month, sunrise is at 7:16 am and sunset at 7:08 pm. On the last day of October, sunrise is at 7:39 am and sunset at 6:34 pm EDT.

Sunshine

In Hilton Head Island, the average sunshine in October is 6.8h.

UV index

The average daily maximum UV index in October is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 5 in October transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in October in Hilton Head Island?

In Hilton Head Island, South Carolina, in October, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 65.3°F (18.5°C). in September, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 89.6°F (32°C).

What is the average humidity in October in Hilton Head Island?

In October, the average relative humidity in Hilton Head Island, South Carolina, is 73%.

How much does it rain in Hilton Head Island in October?

In Hilton Head Island, during October, the rain falls for 10.9 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Hilton Head Island?

February through December are months without snowfall in Hilton Head Island, South Carolina.

How warm is the water in October in Hilton Head Island?

In Hilton Head Island, South Carolina, in October, the average water temperature is 77°F (25°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in October in Hilton Head Island?

In Hilton Head Island, the average day length in October is 11h and 22min.

When are sunrise and sunset in October in Hilton Head Island?

In October, on the first day of the month, sunrise is at 7:16 am and sunset at 7:08 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 6:34 pm EDT.

How long on average sun shines in October in Hilton Head Island?

The average sunshine duration in October in Hilton Head Island, South Carolina, is 6.8h.

What is the UV index intensity in October in Hilton Head Island?

In Hilton Head Island, the average daily maximum UV index in October is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Hilton Head Island, SC

Average temperature in October - Hilton Head Island, SC
  • Average high temperature in October: 75.9°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.4°F).

  • Average low temperature in October: 65.3°F

The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (46°F).

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Average pressure in October
Hilton Head Island, SC

Average pressure in October - Hilton Head Island, SC
  • Average pressure in October: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in October
Hilton Head Island, SC

Average wind speed in October - Hilton Head Island, SC
  • Average wind speed in October: 9.2mph

The windiest months (with the highest average wind speed) are January, March and April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

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Average humidity in October
Hilton Head Island, SC

Average humidity in October - Hilton Head Island, SC
  • Average humidity in October: 73%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is January (72%).

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Average rainfall in October
Hilton Head Island, SC

Average rainfall in October - Hilton Head Island, SC
  • Average rainfall in October: 2.68"

The wettest month (with the highest rainfall) is August (6.06").
The driest month (with the least rainfall) is January (1.02").

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Average rainfall days in October
Hilton Head Island, SC

Average rainfall days in October - Hilton Head Island, SC
  • Average rainfall days in October: 10.9 days

The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in October
Hilton Head Island, SC

Average snowfall in October - Hilton Head Island, SC
  • Average snowfall in October: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in October
Hilton Head Island, SC

Average snowfall days in October - Hilton Head Island, SC
  • Average snowfall days in October: 0 days

The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature in October
Hilton Head Island, SC

Average sea temperature in October - Hilton Head Island, SC
  • Average sea temperature in October: 77°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (57.5°F).

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Average daylight in October /
Average sunshine in October
Hilton Head Island, SC

Average daylight in October / Average sunshine in October - Hilton Head Island, SC
  • Average daylight in October: 11h and 22min

The month with the longest days is June (Average daylight: 14h and 14min).
The month with the shortest days is December (Average daylight: 10h and 5min).

  • Average sunshine in October: 6h and 48min

The months with the most sunshine are June and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in October
Hilton Head Island, SC

Average sunshine days in October - Hilton Head Island, SC
  • Average sunshine days in October: 17.5 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.8 days).

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Average UV index in October
Hilton Head Island, SC

Average UV index in October - Hilton Head Island, SC
  • Average UV index in October: 5

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in October
Hilton Head Island, SC

Average cloud cover in October - Hilton Head Island, SC
  • Average cloud cover in October: 26

The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are June and July (Cloud cover 25).

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Average visibility in October
Hilton Head Island, SC

Average visibility in October - Hilton Head Island, SC
  • Average visibility in October: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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